st: Nested logit -Asking again. Got not replies!!

Hey, -resending my question in the hope of getting a response!
T.
I am trying to run a nested logit model and was not sure about the
data format to do that. If I have a choice variable =1,2,3
then my data are in the following format:
id choice
1 1
2 3
3 1
4 2
However, it seems like the data need it to be in this format:
id choice chosen
1 1 1
1 2 0
1 3 0
2 1 0
2 2 0
2 3 1
3 1 1
3 2 0
3 3 0
4 1 0
4 2 1
4 3 0
If this is the case, how do I get my data in this format? Is this
data format necessary?
Thanks. It turns out I have never run nlogit, only mlogits and many
other things!!
Tulika
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